Money is a singular thing. It ranks with love as man's greatest source of joy. And with death as his greatest source of anxiety.

"The world is a book, and those who do not travel read only a page."

写作就是呼吸，就是生活，就是存在。

Courage doesn’t mean you don’t get afraid. Courage means you don’t let fear stop you.

科学不仅仅是回答问题，更是发现新的问题。